[Haskell-cafe] Haskell Weekly News: Issue 106 - February 21, 2009
byorgey at seas.upenn.edu
Sat Feb 21 12:09:51 EST 2009
Haskell Weekly News
Issue 106 - February 21, 2009
Welcome to issue 106 of HWN, a newsletter covering developments in the
HWEB. Eric Macaulay, following a little prodding by Neil Mitchell,
has released version 0 of HWEB, a small tool for producing literate
Cabal-18.104.22.168 and cabal-install-0.6.2. Duncan Coutts announced
point-releases of the Cabal library and the cabal-install command line
tool. These releases include a number of fixes and minor improvements,
and are expected to be included with ghc-6.10.2.
Barrie 0.3.1. Fraser Wilson announced a hackage release of
Barrie, an implementation of an idea for supporting state based,
Yogurt-0.3. Martijn van Steenbergen announced the release of
Yogurt-0.3, a MUD client library for Haskell. This version improves
over 0.2 in several ways, including support for GHC 6.10, no more
unsafeCoerce needed, new support for forking threads, and various
wxFruit-0.1.2. Henk-Jan van Tuyl announced an update of
wxFruit, a graphical user interface that combines some of the power
and versatility of wxHaskell with the elegance and simplicity of Fruit.
The new version works with GHC 6.10, and also includes a demo game,
PaddleBall. Interested parties, take note: the position of
developer/maintainer for this library is currently open.
Paper draft: "Denotational design with type class morphisms". Conal
Elliott announced a draft of a new paper, "Denotational design
with type class morphisms". Feedback is appreciated, especially if in
time for the March 2 ICFP deadline.
Crypto 4.2.0 & Related News. Creighton Hogg announced the release
of version 4.2.0 of the Crypto library. Creighton will also
betaking over maintenance of the library from Dominic Steinitz.
The Typeclassopedia, and request for feedback. Brent Yorgey
announced a first draft of an article entitled 'The
Typeclassopedia', a "starting point for the student of Haskell wishing
to gain a firm grasp of its standard type classes." Comments and
feedback are encouraged!
hslibsvm-22.214.171.124 - A FFI binding to LibSVM. S. Guenther announced
the hlibsvm package, a set of Haskell bindings to the C++
spacepart-0.1.0.0 (was called data-spacepart). Corey O'Connor
announced a new release of the spacepart package, supporting
space-partitioning data structures. The new release includes many bug
fixes and some code cleanup.
pqueue-mtl, stateful-mtl. Louis Wasserman announced two new
packages, stateful-mtl and pqueue-mtl. stateful-mtl provides an
ST monad transformer, several useful operations on generic monad
transformers, and a monad transformer intended to cleanly externally
wrap operations on a mutable array (including resizing operations).
pqueue-mtl provides implementations of several structures supporting a
generic 'single-in, single-out' paradigm (encapsulated in a typeclass
named Queuelike), including stacks, queues, and several implementations
of priority queues.
haha-0.1 - Animated ascii lambda. Sebastiaan Visser announced
haha, a very minimal vector based ascii art library written just
for fun. If you've always wanted to have a full-color rotating vector
based ascii art lambda on your terminal, now is your chance!
Darcs and Google Summer of Code. Eric Kow floated the idea of
having darcs apply to the Google Summer of Code as a separate mentoring
organization, and discussed several ideas for student projects.
Postdoctoral Research Position at Yale University. Paul Hudak
announced the availability of a postdoctoral research position at
Yale University. The successful candidate will apply modern, high-level
programming language ideas (such as embodied in Haskell) to help design
and implement a language for the control of BGP-based network routers,
with the goal of realizing high-level networking protocols for traffic
engineering, security, and related networking concerns.
Haskell news from the blogosphere.
* GHC / OpenSPARC Project: Triage.
* Manuel M T Chakravarty: Mark your Haskell tweets with #haskell.
* Gregg Reynolds: Performance Economics.
* Alex Mason: AVar released (three times).
* Sean Leather: The strict danger of switching from pure to
monadic Template Haskell.
* Mads Lindstrom: Using Mutable Arrays for Faster Sorting.
* Conal Elliott: Denotational design with type class morphisms. A
draft of Conal's new paper.
* Jesse Andrews: Getting Tiled with XMonad.
* happstack.com: SOCALFP Presentation Slides: "Happstack is
better than X".
* Luke Palmer: Dependent types are ridiculously easy.
* GHC / OpenSPARC Project: Thunderbirds are go.
* Brent Yorgey: Typeclassopedia---a generic response.
* Alex Mason: ASTM updates.
* London Haskell Users Group: Lemmih: LHC - past, present and
* Eric Kow (kowey): announcing: burrito tutorial support group.
Laden with burrito tutorial guilt? The burrito tutorial support
group can help.
* Alex Mason: ASTM: redundant STMish fun.
* happstack.com: Announcing the launch of the Patch-Tag blog.
* Colin Ross: XML parsing with Haskell.
* Brent Yorgey: The Typeclassopedia---request for feedback.
* Sean Leather: Incremental fold, a design pattern.
* Manuel M T Chakravarty: Comparison of type families with
functional dependencies.. A nice summary comparison of these two
Haskell language features.
* Random permutations and sorting: Heinrich Apfelmus.
* A day with xmonad: Colin Adams.
* Antoine Latter: MaybeT - The CPS Version.
* Gregg Reynolds: Intergalactic Telefunctors and Quantum
* Gregg Reynolds: In Praise of Elitism.
* Dan Piponi (sigfpe): Beyond Monads. A generalization of monads
to parameterized monads.
* Well-Typed.Com: Cabal ticket #500.
Quotes of the Week
* KetilMalde: No, those are quite outdated by now. The new horsemen
of the programming apocalypse are, of course, IO, MutableState,
LazyMemoryLeak, and Bottom.
* skorpan: i love the layout of lyah. makes me feel like having some
* lilac: * lilac looks forward to Cale explaining category theory by
analogy to Call of Duty
* byorgey: _|_ ... is a party pooper
* idnar: enlarge your context in just seven days with all-natural
* mmorrow: gah, i'm so used to haskell i forgot a return stmt in C
and was trying to figure out where the segfault was happening for
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